OVMS3-idf/components/pthread/test/test_cxx_cond_var.cpp

49 lines
1.2 KiB
C++
Raw Normal View History

#include <iostream>
#include <thread>
#include <condition_variable>
#include <chrono>
#include <mutex>
#include <atomic>
#include "unity.h"
#if __GTHREADS && __GTHREADS_CXX0X
std::condition_variable cv;
std::mutex cv_m;
std::atomic<int> i{0};
static void waits(int idx, int timeout_ms)
{
std::unique_lock<std::mutex> lk(cv_m);
auto now = std::chrono::system_clock::now();
if(cv.wait_until(lk, now + std::chrono::milliseconds(timeout_ms), [](){return i == 1;}))
std::cout << "Thread " << idx << " finished waiting. i == " << i << '\n';
else
std::cout << "Thread " << idx << " timed out. i == " << i << '\n';
}
static void signals(int signal_ms)
{
std::this_thread::sleep_for(std::chrono::milliseconds(signal_ms));
std::cout << "Notifying...\n";
cv.notify_all();
std::this_thread::sleep_for(std::chrono::milliseconds(signal_ms));
i = 1;
std::cout << "Notifying again...\n";
cv.notify_all();
}
TEST_CASE("C++ condition_variable", "[std::condition_variable]")
{
i = 0;
std::thread t1(waits, 1, 100), t2(waits, 2, 800), t3(signals, 200);
t1.join();
t2.join();
t3.join();
std::cout << "All threads joined\n";
}
#endif